ADAPTIVE PRECISION AND QUANTIFICATION OF A WAVELET TRANSFORMED MATRIX

摘要

The invention relates to a method for reducing the entropy of an original matrix, characterised in that it includes a step using a wavelet transform of said original matrix into a transformed matrix, a quantification coefficient corresponding to each level of wavelets, the calculation of said wavelet transform being carried out in fixed point using a first number of digits no lower than 1, for example 3 digits, after the decimal point. Such a method is particularly advantageous for image compression.